104 citations · 755 across the 27 of their papers we have counts for
4 papers · 1 filter
Relationship between Radar Cross Section and Optical Magnitude based on Radar and Optical Simultaneous Observations of Faint Meteors
Ryou Ohsawa, Akira Hirota, Kohei Morita +40
Radar and optical simultaneous observations of meteors are important to understand the size distribution of the interplanetary dust. However, faint meteors detected by high power l…
New constraint on the atmosphere of (50000) Quaoar from a stellar occultation
Ko Arimatsu, Ryou Ohsawa, George L. Hashimoto +35
We report observations of a stellar occultation by the classical Kuiper belt object (50000) Quaoar occurred on 28 June 2019. A single-chord high-cadence (2 Hz) photometry dataset w…
Mid-infrared Multi-wavelength Imaging of Ophiuchus\,IRS\,48\,Transitional Disk
Mitsuhiko Honda, Kazushi Okada, Takashi Miyata +8
Transitional disks around the Herbig Ae/Be stars are fascinating targets in the contexts of disk evolution and also planet formation. Oph IRS 48 is one of such Herbig Ae stars, whi…
Mid-IR imaging of the transitional disk of HD169142: Measuring the size of the gap
M. Honda, Koen Maaskant, Y. K. Okamoto +14
The disk around the Herbig Ae star HD\,169142 was imaged and resolved at 18.8 and 24.5\,m using Subaru/COMICS. We interpret the observations using a 2D radiative transfer model…